<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <!-- 上述3个meta标签*必须*放在最前面，任何其他内容都*必须*跟随其后！ -->
    <title>Bootstrap 101 Template</title>
    <!-- Bootstrap -->
    <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
    <!-- HTML5 shim 和 Respond.js 是为了让 IE8 支持 HTML5 元素和媒体查询（media queries）功能 -->
    <!-- 警告：通过 file:// 协议（就是直接将 html 页面拖拽到浏览器中）访问页面时 Respond.js 不起作用 -->
    <!--[if lt IE 9]>
      <script src="https://cdn.bootcss.com/html5shiv/3.7.3/html5shiv.min.js"></script>
      <script src="https://cdn.bootcss.com/respond.js/1.4.2/respond.min.js"></script>
    <![endif]-->
    <style>
    .demo {
        border: 1px red solid;
        border-radius: 5px;
    }
    </style>
</head>

<body>
    <div class="container">
        <h1>BootStrap框架学习</h1>
        <h2>栅格系统</h2>
        <div class="row">
            <div class="col-xs-6 col-md-8 demo">
                <div class="row">
                    <div class="col-md-3 demo"><img src="https://img.alicdn.com/i2/2/TB12f31JVXXXXcdXpXXSutbFXXX.jpg_100x150q100.jpg" alt=""></div>
                    <div class="col-md-3 demo"><img src="https://img.alicdn.com/i2/2/TB12f31JVXXXXcdXpXXSutbFXXX.jpg_100x150q100.jpg" alt=""></div>
                    <div class="col-md-3 demo"><img src="https://img.alicdn.com/i2/2/TB12f31JVXXXXcdXpXXSutbFXXX.jpg_100x150q100.jpg" alt=""></div>
                    <div class="col-md-3 demo"><img src="https://img.alicdn.com/i2/2/TB12f31JVXXXXcdXpXXSutbFXXX.jpg_100x150q100.jpg" alt=""></div>
                </div>
            </div>
            <div class="col-xs-7 col-md-4 demo "><img src="http://www.pku.edu.cn/images/content/2018-03/20180320121836010126.jpg" class="img-responsive"></div>
        </div>
        <h2>表单</h2>
        <div class="row">
            <div class="col-md-6 col-md-offset-3">
                <form class="form-horizontal login-form">
                    <div class="form-group">
                        <label for="inputEmail3" class="col-sm-2 control-label">姓名</label>
                        <div class="col-sm-10">
                            <input type="email" class="form-control" id="inputEmail3" placeholder="请输入您的姓名">
                        </div>
                    </div>
                    <div class="form-group">
                        <label for="inputPassword3" class="col-sm-2 control-label">Password</label>
                        <div class="col-sm-10">
                            <input type="password" class="form-control" id="inputPassword3" placeholder="Password">
                        </div>
                    </div>
                    <div class="form-group">
                        <div class="col-sm-offset-2 col-sm-10">
                            <div class="checkbox">
                                <label>
                                    <input type="checkbox"> Remember me
                                </label>
                            </div>
                        </div>
                    </div>
                    <div class="form-group">
                        <div class="col-sm-offset-2 col-sm-10">
                            <button type="submit" class="btn btn-default">Sign in</button>
                        </div>
                    </div>
                </form>
            </div>
        </div>
    </div>
    <!-- jQuery (Bootstrap 的所有 JavaScript 插件都依赖 jQuery，所以必须放在前边) -->
    <script src="https://cdn.bootcss.com/jquery/1.12.4/jquery.min.js"></script>
    <!-- 加载 Bootstrap 的所有 JavaScript 插件。你也可以根据需要只加载单个插件。 -->
    <script src="https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</body>

</html>
